Substrings with [abc] #medium #two_pointers



https://leetcode.com/problems/number-of-substrings-containing-all-three-characters/description/

Max positive count or negative count #easy #binary_search


https://leetcode.com/problems/maximum-count-of-positive-integer-and-negative-integer/description/

Min queries (l..r, v) to decrease nums by v to 0 #medium #line_sweep

https://leetcode.com/problems/zero-array-transformation-ii/description/

Distribute candies to k equal buckets #medium #binary_search


https://leetcode.com/problems/maximum-candies-allocated-to-k-children/description/

Min-max of non-adjucents in array #medium #binary_search



https://leetcode.com/problems/house-robber-iv/description/

Min rank[i] * count^2 to fix all cars #medium #binary_search #heap


https://leetcode.com/problems/minimum-time-to-repair-cars/description

All numbers in pairs #easy #counting #sorting


https://leetcode.com/problems/divide-array-into-equal-pairs/description/

Max window of all pairs AND zero #medium #two_pointers #bit_manipulation


https://leetcode.com/problems/longest-nice-subarray/description/

3-bits flips to make all 1 #medium #bit_manipulation


https://leetcode.com/problems/minimum-operations-to-make-binary-array-elements-equal-to-one-i/description/

Min AND of path weights #hard #bit_manipulation #union-find


https://leetcode.com/problems/minimum-cost-walk-in-weighted-graph/description

Valid recipes from supplies #medium #dfs #dp


https://leetcode.com/problems/find-all-possible-recipes-from-given-supplies/description/

Count fully connected components #medium #union-find #graph


https://leetcode.com/problems/count-the-number-of-complete-components/description/

Count optimal paths from 0 to n - 1 #medium #dijkstra #bellman_ford

https://leetcode.com/problems/number-of-ways-to-arrive-at-destination/description/

Days of non-intersecting intervals #medium #line_sweep


https://leetcode.com/problems/count-days-without-meetings/description

3 non-intersecting ranges on x or y axis #medium #line_sweep


https://leetcode.com/problems/check-if-grid-can-be-cut-into-sections/description/

Min sum of differences of x times #medium #math #quickselect



https://leetcode.com/problems/minimum-operations-to-make-a-uni-value-grid/description/

Min split index to have equal majority elements #medium #counting


https://leetcode.com/problems/minimum-index-of-a-valid-split/description/

Running queries of increasing BFS #hard #bfs #heap


https://leetcode.com/problems/maximum-number-of-points-from-grid-queries/description/

Multiply k numbers with max prime factor count #hard #monotonic_stack


https://leetcode.com/problems/apply-operations-to-maximize-score/description

Split string into separate chars sets #medium


https://leetcode.com/problems/partition-labels/description